How cutting size is calculated
Learn how cutting size subtracts edge banding and pre-milling from the panel dimension.
The cutting size of a panel is the panel dimension minus the edge banding thickness of the two edges along that dimension; any pre-milling allowance is then added back on each banded edge (for example, 720 mm with a 0.8 mm band on both ends and 0.2 mm pre-milling cuts at 720 - 1.6 + 2 x 0.2 = 718.8 mm). A panel with no edge band keeps its finished size.
For example, a 600 mm panel with 0.8 mm edge banding on the two edges along its length (1.6 mm in total) and 0.2 mm pre-milling gives a 598.8 mm cutting size: the band thickness comes off the size and the pre-milling is added back on each banded edge (600 - 1.6 + 2 x 0.2).
Pre-milling values are commonly configured so that the finished size is managed in advance.